20343040

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{691}}^1$

素因数の和:735

約数の個数: 72

約数和(自身を含む): 50920128

約数和(自身を除く): 30577088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 368, 460, 640, 691, 736, 920, 1280, 1382, 1472, 1840, 2764, 2944, 3455, 3680, 5528, 5888, 6910, 7360, 11056, 13820, 14720, 15893, 22112, 27640, 29440, 31786, 44224, 55280, 63572, 79465, 88448, 110560, 127144, 158930, 176896, 221120, 254288, 317860, 442240, 508576, 635720, 884480, 1017152, 1271440, 2034304, 2542880, 4068608, 5085760, 10171520, 20343040]

約数ペア:

[(1, 20343040), (2, 10171520), (4, 5085760), (5, 4068608), (8, 2542880), (10, 2034304), (16, 1271440), (20, 1017152), (23, 884480), (32, 635720), (40, 508576), (46, 442240), (64, 317860), (80, 254288), (92, 221120), (115, 176896), (128, 158930), (160, 127144), (184, 110560), (230, 88448), (256, 79465), (320, 63572), (368, 55280), (460, 44224), (640, 31786), (691, 29440), (736, 27640), (920, 22112), (1280, 15893), (1382, 14720), (1472, 13820), (1840, 11056), (2764, 7360), (2944, 6910), (3455, 5888), (3680, 5528)]